I think you should take it as a foregone conclusion that you cannot work anymore. I would not just walk in and quit, though, or just stop showing up. Take in a note from as many doctors as will write one for you, stating that in their professional opinions you are now totally disabled and cannot work anymore. Your managers won’t blame you for it, how could they? If they do, they are jerks who don’t deserve to be taken seriously. And it shouldn’t be recorded as a voluntary quit, it should be a medical discharge (or whatever they call it). VQ would disqualify you for certain post-job benefits that you would hopefully be able to take advantage of since you had a medical reason that the job was no longer suitable.
Do you have a backup plan, family or kids or someone who can take you in for a while, or any money put aside? I don’t know much about the disability application process, except that everyone gets denied the first time they apply. If you DON’T have any backup resources, talk to your doctors and tell them you would like them to write you a note to your employer certifying that you are too disabled to work any longer, but you don’t have anywhere to go. I hope they would help put you in touch with someone to make those kinds of arrangements (maybe a social worker? I don’t know).
You don’t want to just quit though, because that might disqualify you from collecting unemployment and food stamps.
And just some advice on the side: If you can’t function in a job, then what else are you to do for money? Everyone’s got to live. I’m a taxpayer, but I don’t resent paying for disabled people to “do nothing.” What else are we supposed to do, let them starve? Be homeless? Die? Hell no.
Also, and this is from a more practical standpoint, someday many young taxpayers will be in the same shoes you’re in now (that is, approaching total disability, for **whatever **reason). I sincerely hope that there’s still a program in place to deal with total disability when my generation gets there.
I mean, if I had multiple doctors certifying that I was too disabled to work, I’d take the hint and do whatever it took to stop working. Which includes applying for disability. And I can’t think of a less mentally stressful job than washing dishes, so what else could you even do?
I seriously hope you bring these concerns up with a therapist. In life, we have to deal with the cards we’ve been dealt, not the cards we wish we had. Yes, you wish you could work. But your doctors don’t think you should work. So, don’t work–because you CAN’T! If you can’t trust a doctor’s advice, whose can you trust? You just have to try not to feel guilty about it.